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21  Economy / Service Announcements / [ANN] 2Crow -- 2 party trustless escrow service -- on: March 01, 2015, 11:11:53 AM

A funkenstein the dwarf production...

2Crow is currently in BETA stage, requesting comments, criticisms, security audits, and abuse.  It works, but there is very little error checking in place and many cosmetic errors and other changes are underway.  It is NOT recommended to use this for substantial commerce at this stage.  Please test the service with small amounts, or comment on the readability / usability of the format of the site.   

22  Bitcoin / Project Development / atomic transaction / staking rental on: February 18, 2015, 02:52:36 PM
This question relates to a type of smart contract around atomic cross chain transaction I am trying to develop.  
I'm looking for comment on the feasability and implementation security.

Alice wishes to rent out coin on some chain lets call it PPC, in exchange for BTC from Bob (for example).

Bob creates a time locked transaction for some agreed upon amount of BTC to be given to Alice, in the event that he fails to return the PPC in a timely manner.  
This transaction is a smart contract that automatically deletes itself if a certain amount of PPC arrives to an address controlled by Alice.  
It also arranges for a fee in BTC to be given directly to Alice for her service of renting out the PPC.    

In an atomic transaction, Alice reviews and signs this transaction and adds a signed portion giving the PPC to Bob.

Bob reviews the whole thing, adds his signature, and posts to the relevant networks.  In the process, he pays the fee in BTC, collects the PPC, and locks his collateral in BTC into the network.  

Now, Bob can use the PPC for staking for a short time, Alice knows she will receieve either the agreed upon amount of PPC back or the collateral BTC held in the TX.  
Bob knows he will get the collateral back by depositing the PPC to Alice's agreed upon address.

Can this work?

The only hard part is making a smart contract which can watch both chains.  If it is possible, it seems to me this is has great importance in analysis of proof of stake network security.  

-- funkenstein the dwarf
23  Alternate cryptocurrencies / Altcoin Discussion / A big Thank You to Staking coin devs! on: February 06, 2015, 12:14:18 PM
We've all heard a lot about proof of stake issuance.  People have discussed the pros and cons quite a bit.  Many security issues with the different implementations have been discussed, and remain outstanding. 

However it is only with recent developments of very high percentage staking coins that the truth has come out: this is a thinly veiled HYIP scheme designed to appeal to investors greed over their common sense.  At best, a gambling game that cannot last very long.   

I believe the developers of these coins deserve their winnings for teaching us a valuable lesson in what to avoid when designing a coin for long term stability and use in real commerce. 

24  Alternate cryptocurrencies / Altcoin Discussion / Alternative Elliptic Curve Coins on: January 28, 2015, 04:13:49 PM
I came across an interesting article on elliptic curve digital signatures.

He comes to a remarkable conclusion:

I would like to state that Koblitz curves should be avoided, in any key size as they do not have enough warranty on crypto analytic activity and effectively they are:

    Not part of NSA Suite-B cryptography selection
    Not part of ECC Brainpool selection
    Not part of ANSI X9.62 selection
    Not part of OpenPGP ECC extension selection
    Not part of Kerberos extension for ECC curve selection

In general, I am not a huge fan of his analysis method which is simply appeal to authority rather than actual discussion of the curves.  However there may be something to it.  It is worth pointing out that woodcoin is the only coin I know of which follows his recommendations.

The only other coins I know of which do not use Koblitz curves (in particular secp256k1) are the ones built with CryptoNote.  CryptoNote usees EdDSA which like Koblitz curves may have some advantages but according to the criteria of the linked article still fails to have been recommended by the various authorities.  

Any comments and corrections, especially pointing me to alternative coins, would be greatly appreciated.  

-- funkenstein the dwarf
25  Alternate cryptocurrencies / Mining (Altcoins) / Three months pure CPU woodcutting - a challenge for GPU / FPGA / ASIC devs on: January 25, 2015, 09:56:50 PM
Greetings miners -

  We have now been chopping LOG for three months using only CPUs.  The algorithm is pure double Skein.  Is there any other coin that can claim pure CPU mining at this stage?   


  Thanks --   

funkenstein the dwarf
26  Bitcoin / Bitcoin Discussion / 731.6 kB.. what does it mean? on: January 20, 2015, 07:43:26 PM
I just saw 5 blocks in a row (339795 - 339800) all with size 731.6.

Looking through the recent history I see that is a popular size for blocks.  

Can anybody explain this for me ?   Thanks!

-- funkenstein the dwarf
27  Alternate cryptocurrencies / Altcoin Discussion / [LOG] Whitepaper Release: Woodcoin.pdf on: November 03, 2014, 12:18:00 AM
Greetings all altcoiners. 

The woodcutting community is looking for comments from the larger crypto community.  Please take a look at the whitepaper:

Woodcoin: A peer to peer electronic currency built for longevity and stability
Funkenstein the Dwarf

Many thanks in advance -- 
28  Other / Meta / dot tk domains are banned??? on: October 30, 2014, 09:39:25 PM
Whats up with that?  Why can't I post a link to multifaucet [Suspicious link removed]  what is the issue?  

Funkenstein the Dwarf
29  Alternate cryptocurrencies / Announcements (Altcoins) / [ANN] Woodcoin [LOG] Pure Skein POW, Logarithmic Release, No Premine nor ICO on: October 22, 2014, 02:42:29 AM
A sustainable public digital currency built for longevity              对数可以吗?

Blockchains are LOG structured databases. 

The woodcoin money supply grows LOGarithmically. 

The Merkle Hash TREE is used to verify the block chain integrity.

Woodcoin is an open source project providing a fair, long-lived self supporting block chain for store of value and transfer of value transactions, with triple entry accounting functionality.   

OP last edited Feb. 20, 2022]

Mobile Wallet fork of Andreas Schildbach SPV wallet by Robert Gludo

-- >

NEW!  Exchanges:  

Hermesus --  Regulated USA Cryptocurrency Excxhange,   CREX24,   STEX,   Finexbox .....    


For new pools please go to woodcoin Discord channel or Wechat channel.


Have you ever wondered what will happen when the "halving" coins, or geometric series emission coins like BTC, LTC, BCH, XMR and others, reach a very low coinbase reward?  Without a substantial coinbase reward it becomes harder to support miners to provide the necessary security.  Fees will need to go up, and so users will flee to cheaper coins.    

One solution to this problem is to replace the geometric series emission schedule with a harmonic series emission schedule.  This produces a logarithmically growing money supply which while still capped (at ~28 million) maintains substantial reserve in coinbase, with which to pay out to miners far (and we mean far) into the future.    

It also features improved cryptography both in proof of work function and in digital signature keypairs.

With two minute blocks, LOG is a long-term public ledger for you to do with as you please.



No premine, no checkpoints, no supernodes, no presale
No changes to emission algorithm.  
No airdrop.


Whitepaper available:


(and wallet manipluation)


1) First pure skein coin.

Are you going to argue with Bruce Schneier?  I didn't think so.  The NSA didn't choose this hash for SHA3, so unless it's a double fakeout you should be safe.  Skein is a great hash function and runs really fast on a CPU.  ASICs will grow on trees.  Double skein is the woodcutting algo, consisting of two skein512 hashes of the block header and nothing else.  

2) First Logarithmic release coin.
Many coins follow a hard reward reduction curve: a geometric series.  Instead we use a harmonic series as it is gentler to the ear and actually works long term without infinite inflation or death by fees.  The result is a logarithmically increasing supply of logs.  

supply = 1000000* ( log(nHeight) + gamma )   -  forest

   where gamma = euler-mascheroni constant
              forest  =  5187377.51763962

This is a long term release plan.  
Money supply limit: 27625814.3 LOG  
However these coins will not all be released until after the Julian calendar year 300 million.
Half the coins will be released in roughly the year 2305.  
For more information on how a logarithmic release schedule works please see the whitepaper.  

The supply is entirely specified by this code:  

CAmount GetBlockSubsidy(int nHeight, const Consensus::Params& consensusParams)
    int64_t nSubsidy = 1000000 * COIN;
    if (nHeight<100) return 1*COIN;
    else return nSubsidy/nHeight;

If you are using a coin without looking at the code that governs the release schedule, one might ask - why bother with public coin at all?  This is the monetary policy and it is verifiably capped (non-inflationary) and long lived (substantial block reward incentivising miners without high fee for a long time).  

3) First prime256v1 ECDSA curve coin.

Well, we don't have any demonstrable break for secp256k1 (as used by bitcoin, litecoin, and many others), but a few bits of extra cryptographic security is a good thing.  This is the ANSI X9 standard curve published for financial institutions, with the most usage time under its belt, and we use it for digitally signing your logs and creating your woodcoin addresses.  Many people call it more secure than secp256k1, for a review take a look here.    


Original repo with up to date full node:


Android wallet:  APK

Woodcoin-Core is Segwit Armed and Fully Operational

Segwit enabled with all bells and whistles.
sipa, nullc, coblee
litecoin dev team
bitcoin dev team

GetWork status pending, please use GetBlockTemplate with woodcoin-core for the moment.  


Android wallet is a fork of Andreas Schildbach's classic SPV wallet using woodcoinj



Woodcoin-Wallet for android:

Port: 8338  Testnet: 18338  Rpc: 9338
Speed: 2 min. blocks
Difficulty: 1 hr. adjust

No premine.  No company.  No pickaxe required.  No PoS.  No fiat.  Open source.  
Inspired by the game and other timer based games with woodcutting.
By Satoshi and Satoshi lite.  


The steepest part of the logarithmic curve is the very start.  The rewards of the first 100 blocks were therefore set to zero to avoid these high rewards.  These blocks would have yielded more than five million LOG, so these form an old growth forest that will never be chopped.  The ents are safe here.  The money supply formula above therefore needs to have this forest subtracted.  The trees are our friends and guardians, treat them with respect!  The trees of the world will be more honored and respected as we move into a post-fiat world.  This coin is made with respect for the trees as our family.  In addtition to the first hundred blocks, other donations to the forest have been accepted at this address:


These LOG are effectively removed from the money supply.

This should build as bitcoin does:

sudo apt-get install git build-essential libboost-all-dev libcurl4-openssl-dev libdb5.1-dev libdb5.1++-dev qt-sdk libminiupnpc-dev
git clone

TO MAKE WOODCOIND (command line chopper)

cd woodcoin
make -f makefile.unix
./woodcoind &
(now you need to create ~/.woodcoin/woodcoin.conf as instructed)
./woodcoind &
./woodcoind setgenerate true

TO MAKE WOODCOIN-QT (gui chopper)

cd woodcoin

WINDOWS VERSIONS (contributed by woodcutting community)

MAC VERSION (contributed by woodcutting community)

"Blockchains are log structured databases" - Funkenstein the Dwarf

"Chop Merkle Trees every day" -  Unknown


Please be cautious and understand the counterparty risk inherent in these exchanges:

Currently active exchanges as of June 2020:

Historical exchanges:  

Nova Exchange
Mega Crypton




(please visit Discord channel for up to date pool information)



cpu miner:

nvidia gpu miner:

NVIDIA gpu woodcutters - use CCMINER with SKEIN2

Contact / Chat / Social Media Links :

IRC:  #woodcoin on Freenet

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